Jump to main content or area navigation.

Contact Us

Nonroad Engines, Equipment, and Vehicles

Forklifts, Generators, and Compressors (gasoline/propane)

NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

This page provides regulations and guidance documents for nonroad spark-ignition (SI) engines over 19 kW (25 horsepower), including many kinds of equipment, such as forklifts, generators, and many other farm, industrial and construction applications. These engines may operate on propane, gasoline, or natural gas. Information on marine propulsion engines is available on the Gasoline Boats and Personal Watercraft page. Information on spark-ignition engines for recreational vehicles is on the Snowmobiles, Dirt Bikes and ATVs page. Information on smaller nonroad spark-ignition engines is on the Lawn and Garden (small gasoline equipment) page.

Regulations and Related Documents

See the Electronic Code of Federal Regulations (e-CFR) for the full text of current regulations that apply to Large SI engines:

40 CFR part 1048 Emission standards and certification requirements
40 CFR part 1060 Evaporative emission standards and test procedures
40 CFR part 1065 Exhaust emission test procedures (for lab and in-field testing)
40 CFR part 1068 General Compliance Provisions

top of page

This page is maintained by EPA's Office of Transportation and Air Quality (OTAQ).
For more: About Us | Get E-mail Updates | Browse the A to Z Subject Index.

Jump to main content.